321 



Buccinum varicosum, Gmel. p. 3505. no. 165. 

 Vari£te de la Terebra crenulata. 



Buccinum virgineum, Gmel. p. 3505. no. 168. 



C'est encore une Melania d'apres la figure citee de Lister, pi. 113. 

 f. 7. 



Terebra vittata, Lamk. 



C'est un Buccin (B. vittatum, Linn.) du groupe de Bullia de M. 

 Gray. 



Terebra zebra, Kiener. 



Double emploi de la T. strigata, Sow. 



Pour completer notre travail sur le genre Terebra, il faudrait 

 ajouter ici la liste des especes fossiles. Deja nous avons rassemble de 

 nombreux materiaux, nous comptons plus de 80 noms inscrits ; mais 

 nous n' avons pu nous procurer un grand nombre d'especes qu'il fau- 

 drait comparer pour en assurer la synonymic Nous sommes done 

 force d'ajourner a un moment plus propice cet appendix interessant 

 d'une monographic du genre Terebra. 



14. A Synopsis of the Thrushes (Turdid^e) of the New 

 World. By Philip Lutley Sclater, M.A., F.L.S., Secre- 

 tary to the Society. 



The true Thrushes, of the Linnean genus Turdus as now re- 

 stricted, almost perfectly cosmopolitan in their range, since they 

 occur in every part of the world, tropical and temperate, with the 

 exception of Australia, are found in great abundance in America. 

 Counting the Merulce of some authors amongst their number, for I 

 believe that their structural differences from Turdus are unappre- 

 ciable, we find nearly forty species of this genus already known to 

 occur in the New World ; and, from the number of species which 

 have escaped detection until quite recently, we may reasonably pre- 

 sume that we are not yet acquainted with all the American members 

 of this group. It is useless to enlarge here upon the characteristics 

 of these well-known birds. Suffice it to say, that, as far as we 

 know, their general habits and manners are the same in the New 

 World as in the Old, and that in the few cases in which we are ac- 

 quainted with the mode of nesting and peculiarities of the eggs, these 

 also are similar. Connected with the typical Thrushes of America 

 is a small group of birds forming the genus Catharus of Prince Bo- 

 naparte. This section, until lately known to have but one representa- 

 tive, is now extended to embrace seven species, — Mr. Gould's type 

 Malacocichla, founded upon one of them, being inseparable generi- 

 cally from Catharus. The differences indeed between these birds 

 and the true Thrushes are but slight — consisting in rather longer 



No. 404. — Proceedings of the Zoological Society, 



